The attached table summarizes the specs of different models. I think this should be sticky
I guess that european Moto X is a new HW model with european LTE bands.
To all international buyers: use the attached table to choose the best version for you
1) AT&T version can be unlocked by unlocking services like cellunlocker.net.
2) Unlocked bootloader allows flashing custom ROMs.
3) Regarding LTE bands AT&T version probably supports band 7. It is not mentioned in any official spec/document but ...
Just to confirm the T-Mobile Moto X comes with an unlocked bootloader right? Also, would I be able to unlock it OOTB to use it on any other network?
It comes with unlockable bootloader and without SIM lock